Modularized autonomously-expanded circuit principle experiment box

Abstract

The utility model provides a modularized autonomously expanded circuit principle experiment box, which comprises an experiment box body, discrete component boards, discrete components and experiment boards, required circuit boards are selected according to experiment contents for experiment, the experiment boards can be placed in a holding groove of the experiment box at one time, the experiment operation is flexible, and a magnetic structure is adopted, so that the experiment box is convenient to use. The circuit board can be fixed and measured, the problem that screws and nuts of a traditional experiment box are troublesome to fix, disassemble and assemble is solved, automatic design is achieved, students can independently design experiment schemes, build circuits and conduct different circuit tests on discrete component modules on the basis of full understanding of the circuit principle, and the experiment efficiency is improved. The practical ability, the problem analysis ability and the solution design and development ability of students are improved, the innovation research ability of the students is stimulated, the expandability is high, and electronic skill practical training, electronic technology course design, simulation electronic circuit experiment and single-chip microcomputer principle and application course experiment operation can be carried out according to teaching requirements.

Description

Technical Field

[0001] The utility model relates to the field of circuit principle teaching experimental equipment, in particular to a modular and self-expandable circuit principle experimental box. Background Art

[0002] Verification experiments play a vital role in teaching circuit principles. Through hands-on experiments and personal experience, students can have a deeper understanding and master the basic knowledge of circuit principles. The purpose of verification experiments is to enable students to fully master circuit principles, enable them to draw inferences from one example, learn to build new circuits, and experience the whole process of the experiment.

[0003] Through verification experiments, students can become familiar with the objectives and test methods of the experiment and learn to effectively analyze the experimental data. In addition, through the subdivision and archiving of knowledge modules, students can master the circuit principles more systematically and cultivate their experimental skills and engineering literacy. During the experiment, students can cultivate the spirit of craftsmanship and improve their experimental efficiency and accuracy.

[0004] However, there are some problems with traditional test benches. Due to their large size, there are fewer test benches per student, which affects the experimental results to a certain extent, and students occasionally take advantage of the situation. In addition, due to the difficulty in managing individual discrete components, the high integration of experiments, and the large number of modular verification experiments, students have fewer opportunities to design their own circuits.

[0005] In the overall experiment board mode, the disassembly and assembly of the experiment board is cumbersome, the components are inconvenient to repair after being damaged, and the experimental operation is not flexible enough during the teaching process. These problems have affected the effect of the experiment and the participation of students to a certain extent. Therefore, in order to improve the experimental effect and the participation of students, it is necessary to find a more flexible and efficient experimental method.

[0006] In summary, verification experiments are of great significance in the teaching of circuit principles, but there are some problems that need to be solved in the traditional experimental bench and the overall experimental board model. Therefore, there is an urgent need for an experimental method that can not only solve the problems of the traditional experimental bench and the overall experimental board model, but also meet the practical needs of students. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In view of the deficiencies in the prior art, the utility model provides a modular and self-expandable circuit principle experiment box, which solves the problems raised in the above-mentioned background technology.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: a modular and self-expandable circuit principle experiment box, including an experiment box body, a discrete component board, discrete components and an experiment board. A rectangular groove is provided in the center of the upper end of the experiment box body. An adjustable power knob, a power interface, a signal parameter test board, a signal generation interface and an interface area are arranged around the groove, and electrical connection is achieved through the circuit board in the box. The interface area is subdivided into a power output area, an eight-bit logic level indication area and an eight-bit logic level output area. Multiple experiment box interfaces are configured in each area, and the interior of the rectangular groove is separated by multiple groups of box bottom magnetic suction kits. Each group of magnetic suction kits has a small hole in the center and slots are provided around it.

[0011] Preferably, the discrete component board is made of insulating material, and its upper end surface is equipped with signal input and output interfaces, circuit terminals, fixed resistance interfaces and fixed resistance knobs, and the lower end surface is provided with a magnetic sheet that matches the position of the magnetic suction kit on the bottom of the box. The signal input and output interfaces are arranged near the side edges and lower edges of the discrete component board, and the circuit terminals are laid at the center of the upper end surface of the board body. The fixed resistance knobs are arranged in rows on the upper end surface of the board body near the upper edge, and three fixed resistance interfaces are provided next to each knob.

[0012] Preferably, the discrete components include capacitors, inductors and resistors of various specifications, both ends of which can be connected to circuit terminals to form a complete circuit.

[0013] Preferably, the experimental board is also made of insulating material, and a magnetic sheet matching the position of the magnetic suction kit at the bottom of the box is fixed on its lower end face, which is used to achieve magnetic connection with the magnetic suction kit at the bottom of the box. The upper end face of the experimental board is fixed with components required for various experiments, experimental board terminals, path switches and resistance control knobs. At the same time, the upper end face of the board is also printed with a circuit diagram logo, and each component, path switch and resistance control knob is arranged according to the corresponding component position in the circuit diagram.

[0014] Preferably, the discrete component board and the experimental board can be easily fixed in the rectangular groove through magnetic connection, so that the module can be quickly installed and removed.

[0015] Preferably, the experimental box also adopts a number of preferred designs. The surfaces of the discrete component board and the experimental board are made of insulating materials to improve safety. The circuit diagram on the upper end face of the experimental board is marked as a fixed experimental circuit diagram, which is convenient for users to identify different experimental projects. The magnetic suction kit and magnetic suction sheet at the bottom of the box are both located at the edge to avoid interference with circuit experiments. The fixed experimental circuit diagrams include RLC series and parallel resonance experimental circuit diagrams, Kirchhoff / superposition principle experimental circuit diagrams, equivalent circuit experimental circuit diagrams of active two-terminal networks, Thevenin and Norton theorem experimental circuit diagrams and other types. There are also hand buckles at the edges of the rectangular grooves to facilitate users to take and place the experimental boards.

[0016] (III) Beneficial effects

[0017] The utility model provides a modular and self-expandable circuit principle experiment box, which has the following beneficial effects:

[0018] 1. This scheme adopts modular design. The required circuit boards are selected according to the experimental content. Four experimental boards can be placed in the groove of the experimental box at a time. The experimental operation is flexible, and the magnetic structure is adopted, which can not only fix the circuit board for measurement, but also overcome the problem of the troublesome assembly and disassembly of screws and nuts in traditional experimental boxes.

[0019] 2. This program includes autonomous design, so that students can independently design experimental programs and build circuits on discrete component modules based on their full understanding of circuit principles, and conduct different circuit tests, thereby improving students' hands-on ability, problem analysis ability, and ability to design and develop solutions, and stimulating students' innovative research ability;

[0020] 3. This solution has strong scalability. According to teaching needs, it can carry out electronic skills training, electronic technology course design, simulated electronic circuit experiments, and single-chip microcomputer principles and application course experimental operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the discrete component board of the utility model;

[0024] Figure 4 It is a schematic diagram of the experimental board structure of the utility model.

[0025] In the figure: 11. Experiment box body; 12. Adjustable power knob; 13. Power interface; 14. Magnetic suction kit at the bottom of the box; 17. Signal parameter test board; 18. Signal generation interface; 19. Experiment box interface; 21. Power output area; 22. Eight-bit logic level indication area; 23. Eight-bit logic level output area; 24. Interface area; 25. DC power interface; 26. Hand buckle; 31. Discrete component board body; 32. Signal input and output interface; 34. Circuit terminal; 35. Fixed resistance interface; 36. Fixed resistance knob; 41. Experiment board body; 43. Experiment board magnetic suction kit; 44. Experiment board terminal; 45. Pass switch; 46. Resistance control knob. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0027] The utility model embodiment provides a modular and self-expandable circuit principle experiment box, such as Figure 1-4 As shown, to achieve the above purpose, the utility model is implemented by the following technical solutions: a modular and self-expandable circuit principle experiment box, including an experiment box body 11, a discrete component board, discrete components and an experiment board, such as Figure 1-2 As shown, a rectangular groove is provided at the center of the upper end surface of the experimental box body 11, and an adjustable power knob 12, a power interface 13, a signal parameter test board 17, a signal generating interface 18, a signal generating interface 18 and an interface area 24 are respectively provided around the rectangular groove, and are electrically connected through the circuit board in the experimental box body 11, a DC power interface 25 is provided next to the adjustable power knob 12, and the interface area 24 includes a power output area 21, an eight-bit logic level indication area 22 and an eight-bit logic level output area 23, and a number of experimental box interfaces 19 are provided in the power output area 21, the eight-bit logic level indication area 22 and the eight-bit logic level output area 23, and a number of box bottom magnetic suction kits 14 are grouped in the rectangular groove.

[0028] like Figure 3 As shown, the discrete component board includes a discrete component board body 31, and the upper end surface of the discrete component board body 31 is respectively provided with a signal input and output interface 32, a circuit terminal 34, a fixed resistance interface 35 and a fixed resistance knob 36, and the lower end surface of the discrete component board body 31 is provided with an experimental board magnetic suction kit 43 that matches the position of each group of box bottom magnetic suction kits 14, a plurality of signal input and output interfaces 32 are arranged on the upper end surface of the discrete component board body 31 close to the side edge and the lower edge, the circuit terminal 34 is laid at the center of the upper end surface of the discrete component board body 31, and a plurality of fixed resistance knobs 36 are arranged in a row on the upper end surface of the discrete component board body 31 close to the upper edge, and three fixed resistance interfaces 35 are provided next to each fixed resistance knob 36, and the two ends of the discrete component are used to connect with the circuit terminal 34 to form a circuit.

[0029] like Figure 4 As shown, the experimental board includes an experimental board body 41, and an experimental board magnetic suction kit 43 matching the position of each group of box bottom magnetic suction kits 14 is fixed on the lower end surface of the experimental board body 41, and the experimental board magnetic suction kit 43 is used for magnetic connection with the box bottom magnetic suction kit 14, and the experimental board magnetic suction kit 43 passes through the upper and lower ends of the experimental board body 41 and is fixed, and an experimental board terminal 44, a path switch 45 and a resistance control knob 46 are fixed on the upper end surface of the experimental board body 41, and a circuit diagram mark is provided on the upper end surface of the experimental board body 41, and the experimental board magnetic suction kit 43, the path switch 45 and the resistance control knob 46 are arranged at corresponding component positions in the circuit diagram. According to different experimental requirements, the circuit components fixed on the upper end surface of the experimental board body are also different, and the discrete component board and the experimental board are magnetically connected by the experimental board magnetic suction kit 43 and the box bottom magnetic suction kit 14 and then fixed in the rectangular groove.

[0030] The discrete components include capacitors, inductors and resistors of different specifications. The surfaces of the discrete component board and the experimental board are made of insulating materials. The circuit diagram on the upper end face of the experimental board body 41 is marked as a fixed experimental circuit diagram. The names of the corresponding circuit experiments are marked above the different fixed experimental circuit diagrams. The magnetic suction kit 14 at the bottom of the box and the magnetic suction kit 43 of the experimental board are both arranged at the edge to avoid affecting the circuit experiment. Therefore, the fixed experimental circuit diagram includes RLC series and parallel resonance experimental circuit diagrams, Kirchhoff / superposition principle experimental circuit diagrams, equivalent circuit experimental circuit diagrams of active two-terminal networks, and Thevenin and Norton theorem experimental circuit diagrams. A hand buckle 26 is provided at the edge of the rectangular groove.

[0031] When conducting circuit experiment teaching, students can place the experiment board with the corresponding experiment name written on it into the rectangular groove of the experiment box by magnetic attraction according to the teaching requirements, connect the circuit according to the teaching requirements through DuPont wires or other electronic components, and then conduct tests to verify the corresponding circuit principles.

[0032] In addition to fixed circuit experiments, you can also use discrete component boards and discrete components placed in the rectangular grooves of the experimental box in the same way, and build a self-designed circuit on the discrete component board to verify whether the circuit design is reasonable.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular and self-expandable circuit principle experiment box, characterized by: The invention comprises an experimental box body (11), a discrete component board, a discrete component and an experimental board. A rectangular groove is provided at the center of the upper end surface of the experimental box body (11). An adjustable power knob (12), a power interface (13), a signal parameter test board (17), a signal generation interface (18) and an interface area (24) are provided around the rectangular groove respectively, and are electrically connected through a circuit board in the experimental box body (11). A DC power interface (25) is provided next to the circuit board 12. The interface area (24) comprises a power output area (21), an eight-bit logic level indication area (22) and an eight-bit logic level output area (23). A plurality of experimental box interfaces (19) are provided in the power output area (21), the eight-bit logic level indication area (22) and the eight-bit logic level output area (23). A plurality of box bottom magnetic suction kits (14) are provided in groups in the rectangular groove. The discrete component board comprises a discrete component board body (31), the upper end surface of the discrete component board body (31) is respectively provided with a signal input and output interface (32), a circuit terminal (34), a fixed resistance interface (35) and a fixed resistance knob (36), the lower end surface of the discrete component board body (31) is provided with an experimental board magnetic suction kit (43) matching the position of each group of the box bottom magnetic suction kit (14), a plurality of the signal input and output interfaces (32) are arranged on the upper end surface of the discrete component board body (31) close to the side edge and the lower edge, the circuit terminal (34) is laid at the center of the upper end surface of the discrete component board body (31), a plurality of the fixed resistance knobs (36) are arranged in a row on the upper end surface of the discrete component board body (31) close to the upper edge, and three of the fixed resistance interfaces (35) are arranged next to each of the fixed resistance knobs (36); The two ends of the discrete component are used to connect with the circuit terminal (34) to form a circuit; The experimental board comprises an experimental board body (41), the lower end surface of the experimental board body (41) is fixed with an experimental board magnetic suction kit (43) matching the position of each group of the box bottom magnetic suction kit (14), the experimental board magnetic suction kit (43) is used to be magnetically connected with the box bottom magnetic suction kit (14), the experimental board magnetic suction kit (43) passes through the upper and lower ends of the experimental board body (41) and is fixed, the upper end surface of the experimental board body (41) is fixed with an experimental board terminal (44), a path switch (45) and a resistance control knob (46), the upper end surface of the experimental board body (41) is provided with a circuit diagram mark, and the experimental board magnetic suction kit (43), the path switch (45) and the resistance control knob (46) are arranged at corresponding component positions in the circuit diagram; The discrete component board and the experimental board are magnetically connected via the experimental board magnetic attraction kit (43) and the box bottom magnetic attraction kit (14) and are thus fixed in the rectangular groove.

2. According to claim 1, a modular and self-expandable circuit principle experiment box is characterized by: The discrete components include capacitors, inductors and resistors of different specifications.

3. The modular and self-expandable circuit principle experiment box according to claim 1 is characterized in that: The surfaces of the discrete component board and the experimental board are made of insulating materials.

4. The modular and self-expandable circuit principle experiment box according to claim 1 is characterized in that: The circuit diagram on the upper end surface of the experimental board body (41) is marked as a fixed test circuit diagram, and the names of the corresponding circuit experiments are marked above the different fixed test circuit diagrams.

5. The modular and self-expandable circuit principle experiment box according to claim 1 is characterized in that: The box bottom magnetic attraction kit (14) and the experimental board magnetic attraction kit (43) are both arranged at the edge to avoid affecting the circuit experiment.

6. The modular and self-expandable circuit principle experiment box according to claim 4 is characterized in that: Therefore, the fixed experimental circuit diagrams include RLC series and parallel resonance experimental circuit diagrams, Kirchhoff / superposition principle experimental circuit diagrams, equivalent circuit experimental circuit diagrams of active two-terminal networks, and Thevenin and Norton theorem experimental circuit diagrams.

7. The modular and self-expandable circuit principle experiment box according to claim 1 is characterized in that: A hand buckle (26) is provided at the edge of the rectangular groove.

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